Method and apparatus for controlling the pressure in a...

Details Method and apparatus for controlling the pressure in a... Method and apparatus for controlling the pressure in a...

2007-07-10

2007-07-10

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S458000

Reexamination Certificate

active

11287836

ABSTRACT:
In a common rail operating method and system, an arrangement for controlling the rail pressure is provided with a rail pressure controller including a current control circuit for controlling a suction throttle valve operating current (i) which valve is arranged in the fuel supply line to a high pressure pump supplying high pressure fuel to the common rail. The suction valve operating current control circuit includes a preliminary control value generator which serves also as an emergency control signal generator for the control of the suction valve if an error occurs in the system at least to permit an orderly engine shutdown procedure.

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